Consulta: creatorFacets:"Guimarães,Melina"
Registros recuperados: 2
Data/hora: 11/06/2024 06:51:23

Codominant inheritance of polymorphic color variants of Gracilaria domingensis (Gracilariales, Rhodophyta)
Provedor de dados: 74
Autores: Plastino,Estela M.; Guimarães,Melina; Matioli,Sergio R.; Oliveira,Eurico C.
Agar is the most valuable phycocoloid in the world market. Currently, about half of its production is obtained from the red alga Gracilaria (Gracilariales, Rhodophyta). Consequently, this genus has been the subject of many studies worldwide. A common green color variant of G. domingensis (Kützing) Sonder ex Dickie was found in a natural population on the northeastern coast of Brazil. Crosses were performed to determine the mode of color inheritance. The results can be interpreted as the expression of a pair of codominant alleles, where the green and red phenotypes are homozygous, and the heterozygotes present a brownish color. Heterozygous tetrasporophytes, at least until they are 4-5 cm long, exhibit a parental influence on the female gametophyte, since...
Tipo: Info:eu-repo/semantics/article
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47571999000100020

Deleterious effect of TRIS buffer on growth rates and pigment content of Gracilaria birdiae Plastino &amp;amp; E.C. Oliveira (Gracilariales, Rhodophyta)
Provedor de dados: 39
Autores: Ursi,Suzana; Guimarães,Melina; Plastino,Estela Maria.
This work evaluated the effects of Tris (hydroxymethyl)-aminomethane (TRIS) buffer and its interaction with nutrient concentration on the development of Gracilaria birdie, a common species on the Brazilian coast that has been exploited for agar production. Responses to different conditions were assessed through growth rates and pigment content (chlorophyll a, phycoerythrin, phycocyanin and allophycocyanin). Provasoli's nutrient solution with and without TRIS addition was tested at concentrations of 12.5, 25 and 50%. The pH was also monitored. G. birdiae grew better in the absence of TRIS and at low nutrient concentrations, 12.5 and 25% (growth rates of 10.8-11.3%.day-1). Higher contents of phycoerythrin and chlorophyll a were observed without TRIS at 12.5...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Culture medium; TRIS (hydroxymethyl)-aminomethane; Gracilaria birdiae; Growth; Pigments.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062008000300024